Orthopedic alignment guide
a technology of orthopaedic guide and orthopaedic guide, which is applied in the field of orthopaedic guide, can solve the problems of affecting the accuracy of the knee joint pre-fracture position before fixation, and affecting the development of arthritis
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example 1
Orthopedic Alignment Guide for a Mechanical Axis of a Skeleton
[0062]This example describes an exemplary orthopedic alignment guide 150 having an axial member 64 configured to be arranged parallel to a linear mechanical axis defined by bones of a skeleton; see FIGS. 11-15.
[0063]FIG. 11 shows a partially exploded view of guide 150. The guide may be structured generally as described above in Section I for guide 50, and may have any suitable combination of elements and features disclosed elsewhere herein. For example, guide 150 includes an axial member 64 and a transverse member 66.
[0064]Axial member 64 of guide 150 may be significantly longer than the corresponding axial member of guide 50, to facilitate aligning the axial member of guide 150 with a mechanical axis defined by a pair of movable joints of the skeleton, such as the hip joint and the ankle joint of a left or right leg (see below). To span the distance between the pair of joints, the axial member may be at least twice as lo...
example 2
Joint Alignment Guide with Protractor
[0070]This example describes an exemplary orthopedic alignment guide 250 forming a protractor 252; see FIGS. 16 and 17.
[0071]Guide 250 may be structured generally as described above in Section I for guide 50 and / or guide 150 of Example 1, and may have any suitable combination of elements and features disclosed elsewhere herein. For example, axial member 64 of guide 250 may be configured to be aligned with an anatomic axis or a mechanical axis of a leg or arm, among others. However, guide 250 may form an angle (θ) of 90 degrees between axes 68, 70 defined respectively by axial member 64 and primary indicator 92 of transverse member 66, when the axes are projected orthogonally onto a plane. The primary indicator is marked as “0” on the guide. Offset indicators 94 may be offset uniformly from primary indicator 92 and one another, and by an integral number of degrees (e.g., 1, 2, 3, 4, or 5 degrees, among others), to form a protractor. In the depicte...
example 3
Selected Embodiments
[0073]This example describes selected embodiments of an orthopedic alignment guide and methods of using the guide to align and / or confirm alignment of bone. The selected embodiments are presented as a series of numbered paragraphs.
[0074]Paragraph 1. A method of bone alignment under fluoroscopic imaging, the method comprising: (A) selecting a guide including a radiopaque axial member, a radiolucent carrier, and a radiopaque indicator held by the carrier, wherein the axial member and the indicator are parallel to the same plane and form an angle between one another of less than 90 degrees when projected orthogonally onto the plane, and wherein the carrier has a first side and a second side opposite one another; and (B) aligning the axial member with an axis defined by one or more bones of a leg, and the indicator with a joint of the leg, in an anterior-posterior, fluoroscopic view of the leg; wherein the first side of the carrier faces the joint if the leg is a lef...
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